CMakeLists: Enable usage of C++20 on Linux

This also fixes building on Linux with C++20, so we can enable it across
the board for all OSes that we officially support.

CMakeLists: Correct boost asio disabling define name

Previously the name of the define was missing the BOOST_ prefix.

CMakeLists: Disable concepts in boost asio

vfs_real: Fix MoveFile

CMakeLists: Make use of /std:c++latest on MSVC

frontend: Add support to batch install files to NAND

Fix Discord invite link

AM: fix GetDesiredLanguage:

vk_rasterizer: Pass <pSizes> to CmdBindVertexBuffers2EXT

CMakeLists: Do not search for system libusb on macOS

Revert "Port citra-emu/citra#5441: "Common: remove a mod from AlignUp""

Port citra-emu/citra#5441: "Common: remove a mod from AlignUp"

In cases where the size is not a known constant when inlining, AlignUp<std::size_t> currently generates two 64-bit div instructions.
This generates one div and a cmov which is significantly cheaper.

Provides the buildbot with one builder that is always tracking the
latest version of the C++ standard, allowing us to progressively rectify
our code and amend any differences between standards over time instead
of waiting for a complete standard change, potentially breaking a lot of
code all at once.

service: Update function tables

KeyManager: Prevent writing of invalid keys

This has been fixed in Nvidia's public beta driver 451.74. The previous
beta driver will be broken, people using these will have to update.

cmake: drop dependency on QtOpenGL

CMakeLists: Update fmt to 7.0.1

Keeps the package up to date with the latest major release of fmt.

This version brings in quite a bit of improvements, such as code size
reduction, etc.

CMakeLists: Use lower-case command names

Our convention uses lower-case command names, so this is just a
consistency change.

The file wasn't closed prior to being renamed / moved, throwing an error that states "The process cannot access the file because it is being used by another process." Fix this by closing the file prior to a rename / move operation.

Fixes saving in Luigi's Mansion 3 and KATANA KAMI: A Way of the Samurai Story.

If the keys are zero, don't write them to the autogenerated file.

- Remove the overwrite files checkbox, it will always overwrite
- The progressbar now reflects the progress in terms of data transferred.

Key issues fixed:
- Progress dialog showing up as white/hanging/getting stuck/unresponsive.

Key changes:
- Progress dialog now shows progress as a function of all files instead of per nca within a file.
- Overwrite existing files will overwrite all files in the selection.

This adds support to batch install files to NAND

cmake: Fix libfmt linking errors

cmake: Fix libusb builds breaking